A big glossy biog of Muhammad Ali at his peak, and though 'When we were Kings' has to go down as one of the most riveting sport documentaries that there has ever been this is still a hugely accomplished movie, thanks largely to the slickness of Mann's film making and a superlative performance by Will Smith. Ali was not a huge hit at the cinema, perhaps because so much is known about the great man already, but this a powerful and highly watchable movie, oh and it has some awesome fight scenes to boot.